205410820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{250501}}^1$

素因数の和:250551

約数の個数: 24

約数和(自身を含む): 441885528

約数和(自身を除く): 236474708

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 250501, 501002, 1002004, 1252505, 2505010, 5010020, 10270541, 20541082, 41082164, 51352705, 102705410, 205410820]

約数ペア:

[(1, 205410820), (2, 102705410), (4, 51352705), (5, 41082164), (10, 20541082), (20, 10270541), (41, 5010020), (82, 2505010), (164, 1252505), (205, 1002004), (410, 501002), (820, 250501)]